Africa is closer to home than you might think. Not only are large quantities of our genetic code hypothesised to come from here, but if you’re on holiday here in Tarifa, southern Spain, you can actually see it on a good day. And as you watch the hills roll into sea, the continent seems just a sea breath away: so close you could reach out and touch it. Fortunately, the ferry from Tarifa, Spain, to Morocco allows you to do just that.